挠曲电效应模型
Flexoelectric effect modeling
摘要：
利用偶极挠曲电（FE）极化的统计理论，计算了液晶的序参量、弹性常数和FE系数随温度的变化关系。研究了极性楔形分子和香蕉形分子的两个体系。在这两种情况下，FE系数与平行于分子对称轴的偶极矩分量成比例。讨论了FE效应的起源和畸变相的微观形貌。
英文摘要：
The statistical theory of the dipole flexoelectric (FE) polarization in liquid crystals is used to calculate the temperature dependence of order parameters, the elastic constants and the FE coefficients. Two systems with polar wedge-shaped and banana-shaped molecules are investigated. In both cases the FE coefficients are proportional to the dipole moment component parallel to the molecule symmetry axis. The origin of the FE effect and microscopic pictures of the distorted phases are discussed.
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